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Bug#76478: Grub will not believe that my bios can read beyond 512Mb.
From: |
Jochen Hoenicke |
Subject: |
Bug#76478: Grub will not believe that my bios can read beyond 512Mb. |
Date: |
Fri, 10 Nov 2000 15:50:43 +0100 (MET) |
On Nov 10, Sven LUTHER wrote:
> Ok, here is more data, ...
>
> First, i was using grub 0.5.95, downloaded the newer version today (0.5.96.1)
> will see if it changes anything.
>
> The exact message is :
>
> Error: Selected cylinder exceeds maximum supported by bios.
>
> some more info is as follows :
>
> when in the grub boot menu, before launching linux, i do a geometry (hd0) :
>
> driver 0x80 : C/H/S = 1024/16/63, sectors = 1032192, LBA
> ^^^^^^^^^^
> Wrong, ...
As long as GRUB is using LBA, the C/H/S information is completely
ignored. C is always 1024 or less, except in grub shell, and this is
a limitation of the old bios interface.
What is wrong is the total number of sectors. Your bios doesn't
provide it, so grub has to calculate it from C/H/S.
In grub-0.5.96.1 the total number of sectors is also ignored, so it
should work.
Jochen
Bug#76478: Grub will not believe that my bios can read beyond 512Mb., Jochen Hoenicke, 2000/11/08